try popping around at 2pm.
Better yet, 2 AM.
EDIT:
I see parts is thinking my way. But, I was kinda serious.
If you fancy her, show up acting drunk, and say you just
had to see her, and since she said.... Act drunk enough that
she offers you her couch. More than that, have some sob story,
maybe about some tease. Won't get you any that night (though
if you keep her interested enough to start acting sober, you might),
but it can create quite a bond - especially if you suggest something crazy.